CN102130468B - Synchronization control device, synchronization control method thereof and parallel power generating system - Google Patents
Synchronization control device, synchronization control method thereof and parallel power generating system Download PDFInfo
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- CN102130468B CN102130468B CN 201110092699 CN201110092699A CN102130468B CN 102130468 B CN102130468 B CN 102130468B CN 201110092699 CN201110092699 CN 201110092699 CN 201110092699 A CN201110092699 A CN 201110092699A CN 102130468 B CN102130468 B CN 102130468B
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Abstract
The invention relates to a synchronization control device which is used for controlling a plurality of machines to synchronously output drive signals. The synchronization control device comprises a synchronization pulse signal module for outputting a synchronization pulse signal, a first counter and a plurality of second counters, wherein the first counter and the second counters are used for counting, the first counter automatically clears while a host machine outputs the drive signal, the synchronization pulse signal module outputs a synchronization pulse signal to a plurality of slave machines while the first counter clears, the second counters correspond to the slave machines and automatically clear while the corresponding slave machines receive the synchronization pulse signal, and the slave machines output the drive signals while the corresponding second counters automatically clear. The invention also relates to a synchronization control method of the synchronization control device and a parallel power generation system with the synchronization control device. The host machine and the slave machines synchronously output the drive signals, and when one slave machine is in failure, other slave machines are not influenced, thus the reliability of synchronization operation is improved.
Description
Technical field
The present invention relates to sync control device and synchronisation control means thereof, relate in particular to a kind of sync control device and synchronisation control means thereof of parallel power generating system.
Background technology
Have the advantages such as high generating efficiency and low harmonic wave due to parallel power generating system, become gradually one of main flow scheme of electricity generation system application at present.Parallel power generating system generally comprises the roughly the same loom of a plurality of configurations, and the corresponding signal that drives of the synchronous output of described a plurality of looms is used for the driven in synchronism switch corresponding with described a plurality of looms, and common driving signal is pwm signal.If occur the nonsynchronous phenomenon of pwm signal between described a plurality of loom, very easily cause described a plurality of switch can't synchronous operation, thereby high frequency circulation occurs between described a plurality of loom.
Current way commonly used: all looms share the pwm signal that an independent PWM generator that arranges is sent, and the described independent PWM generator that arranges is moved by host computer control.Yet pass through the cable transmission pwm signal between the independent PWM generator that arranges and each loom, the one side poor reliability, system can't possess redundancy feature on the other hand, in case the independent PWM generator that arranges breaks down, system can paralyse.Therefore, how to guarantee that the synchronous output pwm signal of described a plurality of loom remains the key of present design.
Summary of the invention
In view of this, be necessary to provide a kind of parallel power generating system that can guarantee sync control device, the synchronisation control means of the synchronous output drive signal of a plurality of looms and have described sync control device.
A kind of sync control device, it is used for controlling the synchronous output drive signal of a plurality of looms, and any one in described a plurality of looms elected main frame as, and all the other elect slave as.The first counter and a plurality of the second counter that described sync control device comprises for the synchronization pulse module of output sync pulse signal and is used for counting.Described the first counter is corresponding with described main frame, described the first counter is automatic clear in the described driving signal of described main frame output, and described synchronization pulse module is exported described synchronization pulse to described a plurality of slaves in described the first counter O reset.Described a plurality of the second counter is corresponding with described a plurality of slaves, and when corresponding slave receives described synchronization pulse automatic clear, described a plurality of slaves are exported described driving signal in the second corresponding counter automatic clear.
Preferably, described driving signal is pwm signal, and described pwm signal is generated by the modulation of PWM carrier signal by described loom, and described the first counter is identical with the described PWM carrier signal cycle and keep synchronous.
Preferably, described synchronization pulse module and described the first counter are arranged in described main frame, and described a plurality of the second counters are separately positioned in corresponding slave.
Preferably, described sync control device also comprises be used to the cycle that the judges described synchronization pulse cycle synchronisation judge module consistent with the cycle of described PWM carrier signal whether, when the cycle of described synchronization pulse is consistent with the cycle of described PWM carrier signal, described cycle synchronisation judge module allows described synchronization pulse to pass through, otherwise described cycle synchronisation judge module does not allow described synchronization pulse to pass through.
Preferably, described sync control device also comprises for the pulsewidth amplification module that the pulsewidth of described synchronization pulse is amplified.
Preferably, described sync control device also comprises a plurality of synchronization pulse modules that are separately positioned in corresponding slave in addition, in described a plurality of slaves one is made as new main frame, when all the other are made as new slave, the synchronization pulse module output described synchronization pulse corresponding with new main frame controlled the new synchronous output pwm signal of slave.
Preferably, described sync control device also comprises a plurality of cycle synchronisation judge module, pulsewidth amplification modules that are separately positioned in corresponding slave in addition.
A kind of parallel power generating system, it comprises a plurality of looms and the sync control device that is used for controlling the synchronous output drive signal of described a plurality of looms, and any one in described a plurality of looms elected main frame as, and all the other elect slave as.The first counter and a plurality of the second counter that described sync control device comprises for the synchronization pulse module of output sync pulse signal and is used for counting.Described the first counter is corresponding with described main frame, described the first counter is automatic clear in the described driving signal of described main frame output, and described synchronization pulse module is exported described synchronization pulse to described a plurality of slaves in described the first counter O reset.Described a plurality of the second counter is corresponding with described a plurality of slaves, and when corresponding slave receives described synchronization pulse automatic clear, described a plurality of slaves are exported described driving signal in the second corresponding counter automatic clear.
Preferably, described driving signal is pwm signal, and described pwm signal is converted by the PWM carrier signal by described loom, and described the first counter is identical with the described PWM carrier signal cycle and keep synchronous.
Preferably, described synchronization pulse module and described the first counter are arranged in described main frame, and described a plurality of the second counters are separately positioned in corresponding slave.
Preferably, the sync control device of described parallel power generating system also comprises be used to the cycle that the judges described synchronization pulse cycle synchronisation judge module consistent with the cycle of described PWM carrier signal whether, when the cycle of described synchronization pulse is consistent with the cycle of described PWM carrier signal, described cycle synchronisation judge module allows described synchronization pulse to pass through, otherwise described cycle synchronisation judge module does not allow described synchronization pulse to pass through.
Preferably, the sync control device of described parallel power generating system also comprises for the pulsewidth amplification module that the pulsewidth of described synchronization pulse is amplified.
Preferably, the sync control device of described parallel power generating system also comprises a plurality of synchronization pulse modules that are separately positioned in corresponding slave in addition, in described a plurality of slaves one is made as new main frame, when all the other are made as new slave, the synchronization pulse module output described synchronization pulse corresponding with new main frame controlled the new synchronous output pwm signal of slave.
Preferably, the sync control device of described parallel power generating system also comprises a plurality of cycle synchronisation judge module, pulsewidth amplification modules that are separately positioned in corresponding slave in addition.
A kind of synchronisation control means, it is applied to be used in sync control device controlling the synchronous output drive signal of a plurality of looms, and any one in described a plurality of looms elected main frame as, and all the other elect slave as.The first counter and a plurality of the second counter that described sync control device comprises for the synchronization pulse module of output sync pulse signal and is used for counting.Described the first counter is corresponding with described main frame, and described a plurality of the second counters are corresponding with described a plurality of slaves.Described synchronisation control means comprises the steps: in the described driving signal of described main frame output, described the first counter automatic clear; Export described synchronization pulse to described a plurality of slaves in described the first counter O reset; When described a plurality of slaves receive described synchronization pulse, described a plurality of the second counter automatic clears; In described a plurality of the second counter automatic clears, the described driving signal of described a plurality of slave output.
Preferably, described driving signal is pwm signal, described pwm signal is converted by the PWM carrier signal by described loom, described the first counter is identical with the cycle of described PWM carrier signal and keep synchronous, before described a plurality of slaves receive described synchronization pulse, described synchronisation control means comprises the steps: also to judge whether the cycle of described synchronization pulse is consistent with the cycle of described PWM carrier signal, if, allow described synchronization pulse to pass through, otherwise do not allow described synchronization pulse to pass through; Pulsewidth to described synchronization pulse is amplified; Synchronization pulse after described pulsewidth is amplified carries out the photoelectricity isolation.
Compared with prior art, above-mentioned sync control device, synchronisation control means and have the parallel power generating system of this sync control device, in the time of by the main frame output pwm signal, send synchronization pulse and control a plurality of slaves output pwm signals simultaneously, thereby realized that main frame synchronizes output pwm signal with a plurality of slaves.In addition, when the PWM generator of one of them slave breaks down, do not affect the operation of other slave, thereby improved just as reliability of operation.
Description of drawings
The modular structure schematic diagram of the parallel power generating system that Fig. 1 provides for first embodiment of the invention.
Fig. 2 is the pwm signal waveform schematic diagram of the parallel power generating system in Fig. 1.
The parallel power generating system modular structure schematic diagram that Fig. 3 provides for second embodiment of the invention.
The parallel power generating system modular structure schematic diagram that Fig. 4 provides for third embodiment of the invention.
Fig. 5 is the circuit diagram of the parallel power generating system in Fig. 4.
The parallel power generating system modular structure schematic diagram that Fig. 6 provides for four embodiment of the invention.
The synchronisation control means flow chart of the parallel power generating system that Fig. 7 provides for first embodiment of the invention.
The synchronisation control means flow chart of the parallel power generating system that Fig. 8 provides for second embodiment of the invention.
The synchronisation control means flow chart of the parallel power generating system that Fig. 9 provides for third embodiment of the invention.
Symbol description
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The first execution mode
See also Fig. 1, be the parallel power generating system 100 that first embodiment of the invention provides, it comprises the roughly the same loom of a plurality of configurations 11 and the sync control device 14 that is used for controlling a plurality of loom 11 synchronous output drive signals.
In the present embodiment, loom 11 is inverter, and described driving signal is pwm signal, and loom 11 comprises for by inner PWM carrier signal and the PWM generator 140 of output pwm signal.Because the configuration of a plurality of looms 11 is roughly the same, therefore, any one in a plurality of looms 11 can be elected main frame 10 as, and all the other elect slave 12 as.Main frame 10 is synchronizeed with the PWM carrier signal waveform of slave 12 just can guarantee main frame 10 and the synchronous output pwm signal of slave 12.
Sync control device 14 comprises for the synchronization pulse module 150 of output sync pulse signal and for the first counter 160 and a plurality of the second counters 162 of counting.The first counter 160 is from zero cycle period counting, and its cycle with described PWM carrier signal is identical and keep synchronous.
The first counter 160 is automatic clear in the PWM generator 140 described pwm signals of output of main frame 10.Synchronization pulse module 150 is exported described synchronization pulse to a plurality of slaves 12 in the first counter 160 automatic clears.A plurality of the second counters 162 are corresponding with a plurality of slaves 12, and the second counter 162 is used for automatic clear when corresponding slave 12 receives described synchronization pulse.The PWM generator 140 of slave 12 is exported described pwm signal in the second corresponding counter 162 automatic clears.
See also Fig. 2, waveform X1 is the PWM carrier signal of main frame 10, and waveform X2 is the PWM carrier signal of the slave 12 when sync control device 14 is not set, and X3 is the PWM carrier signal of the slave 12 when sync control device 14 is set.When the main frame 10 described pwm signal of output, the first counter 160 is according to the PWM carrier signal automatic clear corresponding with described pwm signal, thereby drive the synchronization pulse module 150 described synchronization pulses of output to a plurality of slaves 12, and then force the PWM generator 140 output described pwm signals of the second counter 162 automatic clears to control slave 12, realize that finally main frame 10 synchronizes output pwm signal with slave 12.Therefore, during main frame 10 output pwm signal, slave 12 can synchronous output pwm signal.
In the present embodiment, sync control device 14 is software program module, and synchronization pulse module 150 wherein and the first counter 160 are arranged in main frame 10, and a plurality of the second counters 162 are separately positioned in corresponding slave 12.Certainly in other embodiments, sync control device 14 can be arranged on the peripheral components between main frame 10 and a plurality of slave 12, and this peripheral components is generally selected chip design.
Be appreciated that when exist between main frame 10 and slave 12 longer line apart from the time, can increase photoelectric isolating device and carry out photoelectricity and isolate the minimizing external interference between main frame 10 and slave 12.
In sum, above-mentioned parallel power generating system 100 in the time of by main frame 10 output pwm signal, sends synchronization pulse and controls a plurality of slaves 12 output pwm signals simultaneously, thereby has realized that main frame 10 synchronizes output pwm signal with a plurality of slaves 12.In addition, when the PWM generator 140 of one of them slave 12 breaks down, do not affect the operation of other slave, thereby improved just as reliability of operation.Moreover, because the sync control device 14 in parallel power generating system 100 can adopt the software realization, thereby can not make mechanism's some of complex of parallel power generating system 100.
The second execution mode
See also Fig. 3, be the parallel power generating system 200 that second embodiment of the invention provides, it comprises the roughly the same loom of a plurality of configurations 11 and the sync control device 24 that is used for controlling a plurality of loom 11 synchronous output drive signals.
In the present embodiment, loom 11 is inverter, and described driving signal is pwm signal, and loom 11 comprises for by inner PWM carrier signal and the PWM generator 140 of output pwm signal.Because the configuration of a plurality of looms 11 is roughly the same, therefore, any one in a plurality of looms 11 can be elected main frame 10 as, and all the other elect slave 12 as.Main frame 10 is synchronizeed with the PWM carrier signal waveform of slave 12 just can guarantee main frame 10 and the synchronous output pwm signal of slave 12.
Sync control device 24 comprises for a plurality of synchronization pulse modules 150 of output sync pulse signal and for the first counter 160 and a plurality of the second counters 162 of counting.A plurality of synchronization pulse modules 150 are corresponding with a plurality of looms 11, and when electing main frame as for one in a plurality of looms 11, corresponding synchronization pulse module 150 can use.Because sync control device 24 disposes a plurality of synchronization pulse modules 150, therefore, when main frame 10 breaks down, need not mobile sync control device 24 when the user picks out at random the new main frame of conduct in slave 12, be user-friendly to.
The first counter 160 is automatic clear in the PWM generator 140 described pwm signals of output of main frame 10.The first counter 160 is from zero cycle period counting, and its cycle with described PWM carrier signal is identical and keep synchronous.Synchronization pulse module 150 is exported described synchronization pulse to a plurality of slaves 12 in the first counter 160 automatic clears.A plurality of the second counters 162 are corresponding with a plurality of slaves 12, and the second counter 162 is used for automatic clear when corresponding slave 12 receives described synchronization pulse.The PWM generator 140 of slave 12 is exported described pwm signal in the second corresponding counter 162 automatic clears.
The parallel power generating system 200 of present embodiment possesses all beneficial effects of above-mentioned parallel power generating system 100, simultaneously, because sync control device 24 disposes a plurality of synchronization pulse modules 150, therefore, when main frame 10 or the synchronization pulse module 150 corresponding with main frame 10 break down, need not mobile sync control device 24 when the user picks out at random the new main frame of conduct in slave 12, be user-friendly to.
The 3rd execution mode
See also Fig. 4, be the parallel power generating system 300 that third embodiment of the invention provides, it comprises the roughly the same loom of a plurality of configurations 11 and the sync control device 34 that is used for controlling a plurality of loom 11 synchronous output drive signals.
In the present embodiment, loom 11 is inverter, and described driving signal is pwm signal, and loom 11 comprises for by inner PWM carrier signal and the PWM generator 140 of output pwm signal.Because the configuration of a plurality of looms 11 is roughly the same, therefore, any one in a plurality of looms 11 can be elected main frame 10 as, and all the other elect slave 12 as.Main frame 10 is synchronizeed with the PWM carrier signal waveform of slave 12 just can guarantee main frame 10 and the synchronous output pwm signal of slave 12.
The first counter 160 is automatic clear in the PWM generator 140 described pwm signals of output of main frame 10.The first counter 160 is from zero cycle period counting, and its cycle with described PWM carrier signal is identical and keep synchronous.Synchronization pulse module 150 is exported described synchronization pulse in the first counter 160 automatic clears.
In the present embodiment, cycle synchronisation judge module 3410 first judges processing, and pulsewidth amplification module 3412 carries out the pulsewidth amplification more afterwards.In other embodiments, pulsewidth amplification module 3412 can first carry out pulsewidth and amplify, and cycle synchronisation judge module 3410 judges processing more afterwards.Preferably, pulsewidth amplification module 3412 can be that after the synchronization pulses of 53 nanoseconds (ns) is made pulsewidth and amplified, the output pulse width scope is the synchronization pulse of 2～5 delicate (μ s) to pulsewidth.
When selecting chip; often can deposit the unmatched problem of level as the photoelectric isolating device of photoelectric isolating device 343 and between as the signal chip of signal processing module 341, so often need to select corresponding level conversion device 345 according to the operation level of the described signal chip of described photoelectric isolating device.Be appreciated that if as the photoelectric isolating device of photoelectric isolating device 343 and as level match between the signal chip of signal processing module 341, can omit design as the level conversion device of level conversion device 345.
A plurality of the second counters 162 are corresponding with a plurality of slaves 12, and the second counter 162 is used for automatic clear when corresponding slave 12 receives described synchronization pulse.The PWM generator 140 of slave 12 is exported described pwm signal in the second corresponding counter 162 automatic clears.
Please in conjunction with Fig. 5, loom 11 is selected control chip U1, and signal processing module 341 is selected signal processing chip U2, and photoelectric isolating device 343 is selected photoelectric isolated chip U3, and level conversion device 345 is selected level transferring chip U4.
Control chip U1 output pwm signal as main frame 10, and output sync pulse signal is to signal processing chip U2, signal processing chip U2 to described synchronization pulse do pulsewidth amplify process with the cycle judgement after, output signal to that level transferring chip U4 makes level conversion so that subsequent conditioning circuit can continue to process.The signal that photoelectric isolated chip U3 transmits level transferring chip U4 carries out the photoelectricity isolation, and the synchronization pulse after processing is delivered to the control chip U1 as slave 12.Receive output pwm signal after synchronization pulse after processing as the control chip U1 of slave 12, because the processing speed between chip is very fast, therefore, main frame 10 and slave 12 be output pwm signal simultaneously almost, reaches the effect of synchronous output pwm signal.
In other embodiments, sync control device 34 can also increase compensating unit, be used for the time difference that compensation brings because of the long Distance Transmission of described synchronization pulse, force the leading pwm signal of corresponding slave output, leading time and the described time difference of described leading pwm signal are roughly the same, thereby synchronize output pwm signal with main frame from function.Because the processing speed between chip is very fast, described compensating unit can be ignored and not arrange.
The parallel power generating system 300 of present embodiment possesses all beneficial effects of above-mentioned parallel power generating system 100, simultaneously, setting due to signal processing module 341, photoelectric isolating device 343, weaken the interference of the synchronization pulse of outer bound pair main frame 10 outputs, improved the stability of parallel power generating system 300 operations.
The 4th execution mode
See also Fig. 6, be the parallel power generating system 400 that four embodiment of the invention provides, it comprises the roughly the same loom of a plurality of configurations 11 and the sync control device 44 that is used for controlling a plurality of loom 11 synchronous output drive signals.
In the present embodiment, loom 11 is inverter, and described driving signal is pwm signal, and loom 11 comprises for by inner PWM carrier signal and the PWM generator 140 of output pwm signal.Because the configuration of a plurality of looms 11 is roughly the same, therefore, any one in a plurality of looms 11 can be elected main frame 10 as, and all the other elect slave 12 as.Main frame 10 is synchronizeed with the PWM carrier signal waveform of slave 12 just can guarantee main frame 10 and the synchronous output pwm signal of slave 12.
Sync control device 44 comprises a plurality of synchronization pulse modules 150 for output sync pulse signal, the first counter 160 and a plurality of the second counters 162, a plurality of signal processing module 341, a plurality of photoelectric isolating device 343 and the level conversion device 345 that is used for counting.A plurality of synchronization pulse modules 150 are corresponding with a plurality of looms 11, and when electing main frame as for one in a plurality of looms 11, corresponding synchronization pulse module 150 can use.Because sync control device 44 disposes a plurality of synchronization pulse modules 150, a plurality of signal processing module 341, a plurality of photoelectric isolating device 343 and a plurality of level conversion device 345, therefore, when main frame 10 breaks down, need not mobile sync control device 24 when the user picks out at random the new main frame of conduct in slave 12, be user-friendly to.
The first counter 160 is automatic clear in the PWM generator 140 described pwm signals of output of main frame 10.The first counter 160 is from zero cycle period counting, and its cycle with described PWM carrier signal is identical and keep synchronous.Synchronization pulse module 150 is exported described synchronization pulse in the first counter 160 automatic clears.
In the present embodiment, cycle synchronisation judge module 3410 first judges processing, and pulsewidth amplification module 3412 carries out the pulsewidth amplification more afterwards.In other embodiments, pulsewidth amplification module 3412 can first carry out pulsewidth and amplify, and cycle synchronisation judge module 3410 judges processing more afterwards.Preferably, pulsewidth amplification module 3412 can be that after the synchronization pulses of 53 nanoseconds (ns) is made pulsewidth and amplified, the output pulse width scope is the synchronization pulse of 2～5 delicate (μ s) to pulsewidth.
Photoelectric isolating device 343 is used for described synchronization pulse is carried out the photoelectricity isolation, has solved the interference problem of altogether not bringing due to a plurality of looms 11, realizes anti-jamming effectiveness.Photoelectric isolating device 343 operated by rotary motion are between pulsewidth amplification module 3412 and a plurality of slave 12.
When selecting chip; often can deposit the unmatched problem of level as the photoelectric isolating device of photoelectric isolating device 343 and between as the signal chip of signal processing module 341, so often need to select corresponding level conversion device 345 according to the operation level of the described signal chip of described photoelectric isolating device.Be appreciated that if as the photoelectric isolating device of photoelectric isolating device 343 and as level match between the signal chip of signal processing module 341, can omit design as the level conversion device of level conversion device 345.
A plurality of the second counters 162 are corresponding with a plurality of slaves 12, and the second counter 162 is used for automatic clear when corresponding slave 12 receives described synchronization pulse.The PWM generator 140 of slave 12 is exported described pwm signal in the second corresponding counter 162 automatic clears.
In other embodiments, sync control device 44 can also increase compensating unit, be used for the time difference that compensation brings because of the long Distance Transmission of described synchronization pulse, force the leading pwm signal of corresponding slave output, leading time and the described time difference of described leading pwm signal are roughly the same, thereby main frame can be synchronizeed with slave output pwm signal.Because the processing speed between chip is very fast, described compensating unit can be ignored and not arrange.
In the present embodiment, owing to having two signal processing modules 341 and two photoelectric isolating devices 343 between adjacent two looms 11, therefore, described synchronization pulse can carry out twice cycle judgement, twice photoelectricity isolation, yet the pulsewidth amplification realize a subfunction, can carry out in any one loom 11, preferably, be processed by the pulsewidth amplification module 3412 that receives at first described synchronization pulse.
The parallel power generating system 400 of present embodiment possesses above-mentioned parallel power generating system 100, all beneficial effects of 200,300, is user-friendly to.
The specific embodiment of the present invention also illustrates a kind of synchronisation control means.
The first execution mode
See also Fig. 6, be the synchronisation control means that first embodiment of the invention provides, it is applied to above-mentioned parallel power generating system 100,200, and it comprises the steps.
Step S60: the main frame output pwm signal, described pwm signal is converted by the PWM carrier signal by described main frame.This step is carried out by the PWM generator 140 of main frame 10.
Step S62: in the described pwm signal of described main frame output, described the first counter automatic clear.This step is carried out by sync control device 14, the first counter 160 of 24.
Step S64: export described synchronization pulse to described a plurality of slaves in described the first counter O reset.This step is carried out by sync control device 14,24 synchronization pulse module 150.
Step S66: when described a plurality of slaves receive described synchronization pulse, described a plurality of the second counter automatic clears.This step is carried out by sync control device 14, the second counter 142 of 24.
Step S68: in described a plurality of the second counter automatic clears, the described pwm signal of described a plurality of slave output.This step is carried out by the PWM generator 140 of slave 12.
In sum, above-mentioned parallel power generating system 100,200 synchronisation control means, in the time of by main frame 10 output pwm signal, send synchronization pulse and control a plurality of slaves 12 output pwm signals simultaneously, thereby realized that main frame 10 synchronizes output pwm signal with a plurality of slaves 12.In addition, when the PWM generator 140 of one of them slave 12 breaks down, do not affect the operation of other slave, thereby improved just as reliability of operation.
The second execution mode
See also Fig. 7, be the synchronisation control means that second embodiment of the invention provides, it is applied to above-mentioned parallel power generating system 300, and it comprises the steps.
Step S70: the main frame output pwm signal, described pwm signal is converted by the PWM carrier signal by described main frame.This step is carried out by the PWM generator 140 of main frame 10.
Step S72: in the described pwm signal of described main frame output, described the first counter automatic clear.This step is carried out by the first counter 160 of sync control device 34.
Step S74: export described synchronization pulse in described the first counter O reset.This step is carried out by the synchronization pulse module 150 of sync control device 34.
Step S76: whether the cycle that judges synchronization pulse is consistent with the cycle of described PWM carrier signal, if so, and execution in step S78, otherwise return to step S76.
Step S78: allow synchronization pulse to pass through.Wherein, step S76 is to cycle synchronisation judge module 3410 execution of step S78 by sync control device 34.
Step S710: the pulsewidth to synchronization pulse is amplified.This step is carried out by the pulsewidth amplification module 3412 of sync control device 34.
Step S711: the synchronization pulse after pulsewidth is amplified carries out level conversion.This step is carried out by level conversion device 345.
Step S712: the synchronization pulse after level conversion is carried out the photoelectricity isolation, and this step is carried out by the photoelectric isolating device 343 of sync control device 34.
Step S714: when described a plurality of slaves receive described synchronization pulse, described a plurality of the second counter automatic clears.This step is carried out by the second counter 142 of sync control device 34.
Step S716: in described a plurality of the second counter automatic clears, the described pwm signal of described a plurality of slave output.This step is carried out by the PWM generator 140 of slave 12.
Be appreciated that in step S76, when the cycle of the cycle that judges synchronization pulse and described PWM carrier signal is inconsistent, also can enter other steps, break down as step prompting sync control device etc.
Be further appreciated that on slave fault detection unit can also be set detect whether receive synchronization pulse in 1S, if do not have, judge that sync control device breaks down, otherwise enter follow-up flow process.
In sum, the synchronisation control means of above-mentioned parallel power generating system 300, all beneficial effects that possess the synchronisation control means of above-mentioned parallel power generating system 100 have also weakened the interference of the synchronization pulse of outer bound pair main frame 10 outputs simultaneously, improve the stability of parallel power generating system 300 operations.
The 3rd execution mode
See also Fig. 8, be the synchronisation control means that third embodiment of the invention provides, it is applied to above-mentioned parallel power generating system 400, and it comprises the steps.
Step S80: the main frame output pwm signal, described pwm signal is converted by the PWM carrier signal by described main frame.This step is carried out by the PWM generator 140 of main frame 10.
Step S82: in the described pwm signal of described main frame output, described the first counter automatic clear.This step is carried out by the first counter 160 of sync control device 44.
Step S84: export described synchronization pulse in described the first counter O reset.This step is carried out by the synchronization pulse module 150 of sync control device 44.
Step S86: whether the cycle that judges synchronization pulse is consistent with the cycle of described PWM carrier signal, if so, and execution in step S88, otherwise return to step S86.
Step S88: allow synchronization pulse to pass through.Wherein, step S86 is to cycle synchronisation judge module 3410 execution of step S88 by main frame 10.
Step S810: the pulsewidth to synchronization pulse is amplified.This step is carried out by the pulsewidth amplification module 3412 of main frame 10.
Step S811: the synchronization pulse after pulsewidth is amplified carries out level conversion.This step is carried out by level conversion device 345.
Step S812: the synchronization pulse after level conversion is carried out the photoelectricity isolation.This step is carried out by the photoelectric isolating device 343 on main frame 10.
Step S813: synchronization pulse is carried out again the photoelectricity isolation.This step is carried out by the photoelectric isolating device 343 on slave 12.
Step S814: whether the cycle that again judges synchronization pulse is consistent with the cycle of described PWM carrier signal, if so, and execution in step S815, otherwise return to step S814.
Step S815: allow synchronization pulse to pass through.Wherein, step S814 is to cycle synchronisation judge module 3410 execution of step S815 by slave 12.
Step S816: when described a plurality of slaves receive described synchronization pulse, described a plurality of the second counter automatic clears.This step is carried out by the second counter 142 of sync control device 44.
Step S817 is in described a plurality of the second counter automatic clears, and described a plurality of slaves are exported described pwm signal.This step is carried out by the PWM generator 140 of slave 12.
Be appreciated that in step S86, S814, when the cycle of the cycle that judges synchronization pulse and described PWM carrier signal is inconsistent, also can enter other steps, break down as step prompting sync control device etc.
Be further appreciated that on slave fault detection unit can also be set detect whether receive synchronization pulse in 1S, if do not have, judge that sync control device breaks down, otherwise enter follow-up flow process.
In sum, the synchronisation control means of above-mentioned parallel power generating system 400, all beneficial effects that possess the synchronisation control means of above-mentioned all parallel power generating systems have also weakened the interference of the synchronization pulse of outer bound pair main frame 10 outputs simultaneously, improve the stability of parallel power generating system 400 operations.
The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. sync control device, it is used for controlling the synchronous output drive signal of a plurality of looms, it is characterized in that, any one in described a plurality of loom elected main frame as, all the other elect slave as, described sync control device comprises the synchronization pulse module for output sync pulse signal, and the first counter and a plurality of the second counter that are used for counting, described the first counter is corresponding with described main frame, described the first counter is automatic clear in the described driving signal of described main frame output, described synchronization pulse module is exported described synchronization pulse to described a plurality of slaves in described the first counter O reset, described a plurality of the second counter is corresponding with described a plurality of slaves, and when corresponding slave receives described synchronization pulse automatic clear, described a plurality of slave is exported described driving signal in the second corresponding counter automatic clear.
2. sync control device as claimed in claim 1, it is characterized in that, described driving signal is pwm signal, and described pwm signal is obtained by the modulation of PWM carrier signal by described loom, and described the first counter is identical with the described PWM carrier signal cycle and keep synchronous.
3. sync control device as claimed in claim 1, is characterized in that, described synchronization pulse module and described the first counter are arranged in described main frame, and described a plurality of the second counters are separately positioned in corresponding slave.
4. sync control device as claimed in claim 2, it is characterized in that, described sync control device also comprises be used to the cycle that the judges described synchronization pulse cycle synchronisation judge module consistent with the cycle of described PWM carrier signal whether, when the cycle of described synchronization pulse is consistent with the cycle of described PWM carrier signal, described cycle synchronisation judge module allows described synchronization pulse to pass through, otherwise described cycle synchronisation judge module does not allow described synchronization pulse to pass through.
5. sync control device as claimed in claim 4, is characterized in that, described sync control device also comprises for the pulsewidth amplification module that the pulsewidth of described synchronization pulse is amplified.
6. sync control device as claimed in claim 5, it is characterized in that, described sync control device also comprises a plurality of synchronization pulse modules that are separately positioned in corresponding slave in addition, in described a plurality of slaves one is made as new main frame, when all the other are made as new slave, the synchronization pulse module output described synchronization pulse corresponding with new main frame controlled the new synchronous output pwm signal of slave.
7. sync control device as claimed in claim 6, is characterized in that, described sync control device also comprises a plurality of cycle synchronisation judge module, pulsewidth amplification modules that are separately positioned in corresponding slave in addition.
8. parallel power generating system, it comprises a plurality of looms and the sync control device that is used for controlling the synchronous output drive signal of described a plurality of looms, described sync control device is the described sync control device of any one in 1 to 7 of the claims.
9. synchronisation control means, it is applied to be used for controlling the synchronous output drive signal of a plurality of looms in sync control device, any one in described a plurality of loom elected main frame as, all the other elect slave as, the first counter and a plurality of the second counter that described sync control device comprises for the synchronization pulse module of output sync pulse signal and is used for counting, described the first counter is corresponding with main frame, described a plurality of the second counter is corresponding with described a plurality of slaves, and described synchronisation control means comprises the steps:
In the described driving signal of described main frame output, described the first counter automatic clear;
Export described synchronization pulse to described a plurality of slaves in described the first counter O reset;
When described a plurality of slaves receive described synchronization pulse, described a plurality of the second counter automatic clears;
In described a plurality of the second counter automatic clears, the described driving signal of described a plurality of slave output.
10. synchronisation control means as claimed in claim 9, it is characterized in that, described driving signal is pwm signal, described pwm signal is converted by the PWM carrier signal by described loom, described the first counter is identical with the cycle of described PWM carrier signal and keep synchronous, before described a plurality of slaves received described synchronization pulse, described synchronisation control means also comprised the steps:
Whether the cycle that judges described synchronization pulse is consistent with the cycle of described PWM carrier signal, if so, allows described synchronization pulse to pass through, otherwise do not allow described synchronization pulse to pass through;
Pulsewidth to described synchronization pulse is amplified;
Synchronization pulse after described pulsewidth is amplified carries out the photoelectricity isolation.
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| CN102447940B (en) * | 2011-12-19 | 2013-11-06 | 四川长虹电器股份有限公司 | System and method for realizing 3D (three-dimensional) synchronous signal time sequence and code control based on PWM (Pulse Width Modulation) |
| CN104104113A (en) * | 2014-08-11 | 2014-10-15 | 哈尔滨同为电气股份有限公司 | Method for grid-connected control of LCI driving high-voltage synchronous motor |
| CN105634460B (en) * | 2014-11-07 | 2020-03-06 | 宁波舜宇光电信息有限公司 | Method and system for actively learning and synchronizing input pulse |
| CN110235394B (en) * | 2017-09-05 | 2020-12-04 | 深圳欣锐科技股份有限公司 | Method for realizing high-frequency carrier synchronization and related device |
| CN111030514B (en) * | 2019-12-26 | 2021-10-08 | 深圳市英威腾电气股份有限公司 | Frequency converter parallel operation control system |
| CN114448293B (en) * | 2022-04-06 | 2022-07-05 | 中汽创智科技有限公司 | Motor synchronous control method, system, vehicle and storage medium |
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Address after: 230088 Anhui city of Hefei province high tech Zone Xiyou Road No. 1699 Patentee after: Sun Grow Power Co., Ltd. Address before: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Patentee before: Sun Grow Power Co., Ltd. |